The Onyx alternative
An alternative to Onyx focused on storage
Onyx is a general maintenance utility with many system tasks. MacZentra is narrower: it shows where your storage went and cleans caches, duplicates, developer junk and app leftovers, with every removal going to the macOS Trash.
MacZentra vs. Onyx, side by side
| Feature | MacZentra | Onyx |
|---|---|---|
| Pricing model | Free scan, one-time purchase to clean | Free |
| Focus | Storage analysis and cleanup | General system maintenance |
| Disk visualization | Treemap, Sunburst and Tree View | Not included |
| Duplicate finder | Exact (BLAKE3) + fuzzy name + similar photos | Not included |
| Developer junk | Docker, Xcode, node_modules, conda | Not included |
| Deletions | Always to the macOS Trash (recoverable) | See vendor |
Why people switch
Built for storage
The whole app answers one question: what is using my disk, and what is safe to remove.
Visual, not a task list
A Treemap and Sunburst show sizes, so you pick what to clean by looking.
Safe by default
Removals go to the Trash, and scanning never changes anything.
Frequently asked questions
Is MacZentra a good Onyx alternative?+
If your goal is freeing disk space rather than running system maintenance tasks, yes. Scanning is free in MacZentra.
Does MacZentra change system settings?+
No. Scanning is read-only, and cleaning only moves files you choose to the Trash.
Does it need an account?+
No. The licence is verified offline and doesn’t need an account.
Scan your Mac for free
Scanning, the Treemap, Sunburst and Tree View are all free. Cleaning is a one-time $49.99 purchase. Anything you remove goes to the macOS Trash, so you can restore it.
macOS 13 Ventura or later · Apple silicon